Impact of Hydration on Body Status Pre &Post Dialysis: A Radiological Appraisal by Dexa Scan

Aims & Objectives: The aim of this study was to evaluate the impact of haemodialysis on the estimation of body composition & status using DEXA scan as a model to understand whether any fluctuations in tissue turgescence cause errors in estimation of fat by DEXA scan. Material & Methods: Twenty-four patients (11men, 15 women), age 65-75years-old, BMI 23-31 Kg/m2, underwent a whole-body DEXA scan immediately pre and post haemodialysis (approx after 2hrs). Conclusion: Hydration status must be considered when measurements of body mass are performed. The major rate of fluid accumulation was noted in legs as there is dependence on venous competence and muscle tone against gravity, and also there is postural variance. Keywords: DEXA; Hydration; Body; Composition; Imaging